On the 1st May in the Imperial Year 761 (which is generally acknowledged to be around the Winter Solstice 2009 on St. James), significant Shadow storms were observed in the zone of shadows nearest to St. James, Casablanca, and Animus.
Investigations discovered a new Logrus-like power hanging in empty space. Subsequently, a Keeper was found for this Logrus, and the surrounding world became formed.
Little is known about this world except for it's name - Symphony.